Line coupling assembly

Abstract

A line coupling assembly for a motor vehicle includes a line coupling, a first line, and a second line which can be coupled to the first line via the line coupling, wherein at their coupling-side ends, which are supposed to be connected, the lines each have a coupling component which, when the lines are completely coupled, interact such that the lines are tightly coupled together. When the lines are not completely coupled, the coupling components interact such that there is a defined inspection gap near the line coupling.

The invention claimed is: 
     
       1. A line coupling assembly for a motor vehicle, comprising:
 a line coupling; 
 a first line; and 
 a second line configured to be coupled to the first line via the line coupling, 
 wherein a coupling-side end of the first line and a coupling-side end of the second line each have a coupling component which are configured such that, when the first line and the second line are completely coupled, the coupling components interact in such a way that the first line and the second line are coupled tightly to each other, 
 wherein the coupling components are configured such that, when the first line and the second line are not completely coupled, the coupling components interact in such a way that there is a defined inspection gap between an outer wall of the first line and an inner wall of the second line in an area of the line coupling that is larger than when the first line and the second line are completely coupled, 
 wherein one of the coupling components is an indentation in one of the outer wall of the first line or the inner wall of the second line, 
 wherein the indentation, starting from a coupling-side end face of the one of the first line or the second line, extends away from the coupling-side end face in an axial direction, 
 wherein the indentation has a guide section and a fastening section, 
 wherein, starting from the coupling-side end face of the one of the first line or the second line, the guide section extends away from the coupling-side end face in an axial direction, and the fastening section adjoins the guide section in an axial direction at a distance from the coupling-side end face, and 
 wherein the fastening section, as viewed in a radial direction, is deeper than the guide section. 
 
     
     
       2. The line coupling assembly according to  claim 1 , wherein, when completely coupled, the coupling components interengage in a form-fitting manner. 
     
     
       3. The line coupling assembly according to  claim 1 , wherein, when completely coupled, the complete coupling is configured to be released by rotating the first line and the second line relative to each other in circumferential directions. 
     
     
       4. The line coupling assembly according to  claim 1 , further comprising:
 a seal arranged in a respective circumferential direction on the outer wall of the first line or on the inner wall of the second line, in a circumferential groove in at least one of the outer wall of the first line or the inner wall of the second line, 
 wherein the seal is arranged between the outer wall of the first line and the inner wall of the second line when the first line and the second line are coupled. 
 
     
     
       5. The line coupling assembly according to  claim 4 , further comprising:
 a radially protruding sealing projection which presses radially against the seal when the first line and the second line are completely coupled, 
 wherein the radially protruding sealing projection is provided on the outer wall of the first line on which the seal is not arranged, or on the inner wall of the second line on which the seal is not arranged. 
 
     
     
       6. The line coupling assembly according to  claim 1 , wherein the indentation ends in front of a seal in an axial direction,
 wherein the seal is arranged in a respective circumferential direction on the outer wall of the first line or on the inner wall of the second line, 
 wherein the seal is arranged between the outer wall of the first line and the inner wall of the second line when the first line and the second line are coupled. 
 
     
     
       7. The line coupling assembly according to  claim 1 , wherein the fastening section is adjoined in the circumferential direction of a corresponding one of the first line or the second line by at least one ramp section, which connects a surface of the wall in which the indentation is arranged to a base area of the indentation. 
     
     
       8. The line coupling assembly according to  claim 1 , wherein the guide section has lateral guide walls which delimit a guide channel, the guide channel tapering from the coupling-side end face of the one of the first line or the second line toward the fastening section. 
     
     
       9. The line coupling assembly according to  claim 1 , wherein one of the coupling components comprises a latching lug protruding in a radial direction on one of the outer wall of the first line or the inner wall of the second line, wherein the latching lug is spaced further apart in an axial direction from a coupling-side end face of a corresponding one of the first line or the second line than a seal,
 wherein the seal is arranged in a respective circumferential direction on the outer wall of the first line or on the inner wall of the second line, 
 wherein the seal is arranged between the outer wall of the first line and the inner wall of the second line when the first line and the second line are coupled. 
 
     
     
       10. The line coupling assembly according to  claim 9 , wherein the latching lug comprises a ramp extending in an axial direction toward the one of the outer wall of the first line or the inner wall of the second line to a coupling-side end of the corresponding one of the first line or the second line. 
     
     
       11. The line coupling assembly according to  claim 9 , wherein the latching lug extends at an end facing away from the coupling-side end of the corresponding one of the first line or the second line, extends substantially orthogonally toward the one of the outer wall of the first line or the inner wall of the second line, so that a step is formed. 
     
     
       12. The line coupling assembly according to  claim 9 ,
 wherein, when the first line and the second line are completely coupled, the latching lug is accommodated in a fastening section of the indentation. 
 
     
     
       13. The line coupling assembly according to  claim 1 , wherein the guide section is formed as a guide channel, and wherein the guide channel, as viewed in the radial direction, is deeper than a wall surface of the wall in which the indentation is arranged.